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$str_no_dash='
IIIIIIIIIIIIIIIIIIIIIIIIIIIMMMMMMMOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOMMMMMM
+MMMIIIMMMMMMMMMMMOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOMMMMMMMMMI
+IIMMMMMMMMMOOOOMMMMMMMMMIIMMMMMMMMMOOOOOOOOOOOOOOOOOMMMMMMMMMIIIIMMMM
+MMMMMOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOMMMMMMMIIIIIMMM
+MMMMMMMMOOOOOOOOOOOOOOOOOOOMMMMMMMMMMMIIIIIMMMMMMMMMMMOOOOOOOOOOOO';
$str_with_dash='VNRV-L-K--R-------PL------A-------N---------PV----N---
+--D----V--G---V--T-----L-----G------T--------------------------------
+---------------------------------------------------------------------
+---------------------------------------------------------------------
+---RG----E--R----RG--E-F-----D-L--G----WN----A----N-------D----------
+----------A-------AR-----F---RM----T----G-----A-----A--E-N----S-N-SF-
+---------------------------------------------------------------------
+---------------------------------------------------------------------
+---------------------------------------------------------------------
+-----------------------------------------------R---------------------
+---------------------------------------------------------------------
+---------------------------------------------------------------------
+------------------------------------DQF--Q-----L-N-R-Q---A----IA--P--
+S----------------AQ--F---------K-------L----D---R----------D--------T
+--V--L--------N--V-------E--FDY-LHD----------------------------------
+---------------------------------------------------------------------
+------------------------------------------------------R--R---T--S---D
+--Q--GI-------------------------------------P--AYR-------------------
+------------------GRPV---------------DVP-IN----TY-Y-GSAD-------------
+----------------------------------------------------------------GVNSS
+YNDV-S----A-K--SA-----------------T-V--------S----L-------------D----
+-H-----R---------------F----N-----------D-S-L-S-F------------------HG
+--A------------------------------------------------------------------
+-------------------------------------------I--R--AY------------------
+--------DF--SL------ER-----------------------------------------------
+-----K-N---Y-V-----T----Y----E--P-I---K-TA---------------------------
+---------------------------------------------------------------------
+-----------------------------------------------AHP--------------VV--T
+--L--D-Q--S--T-------------------------------------------------------
+---------------------------------------------------------------------
+---------------------------------------------------------------------
+---------------------------------------------------------------------
+RQRTDH-----G--I-D---G--L--F--EL----------------------------------T---
+-QK---TS-----------LFGM----------------------------------------------
+--------------------------RH--E----------L---L--------Y------G--L----
+---E--LS--Q----Q--Q-K------------------------------------------------
+---------------------------------------------------------------------
+---------------------------------------------------------------------
+---------------------------------------------------------------------
+---------------------F--DTIY--------S---------------V-S--------------
+---------------------------------------------------------------K---VA
+-TYDLFNP----------------------------------QPVVLPG--VP----------TGT---
+---------------------------------------------------------------------
+---------------------------------------------------------------------
+----------RA----K-----------------------TNASTVVG-LA-----G--V-Y----A--
+------Q-------D--L--IS-----------------------L---------T---E--H------
+-------W---K-----V---L--A---G----------------------------L-----------
+--R---F-------------------------------------DY---------------------L-
+-------------------------------NQ-------------I----------------------
+RHDYTSSNV------------------------------------------------------------
+---------------------------------------------------------------------
+---------------------------------------------------------------------
+---------------------------------------------------------------------
+--------------------------NLDRTDHAW----SP-------R---V----------------
+-------------------G--LI------Y-------------------------------E--P---
+----L---DW----------------------------------L--TL--Y----G--SFSQ------
+-----S-F------S-------------------------------------P-L--A-----------
+--D----T----L-------I-S--SG------------A-----------------------------
+---------------------------------------------------------------';

@final=();
@split_str_no_dash = split(//, $str_no_dash);
...
    $final_string=join("", @str_final);
}