[ABC][DEF][HIJ] => ABC DEF HIJ
ABC[DEF]HI[JK][LMNO]PQ => A B C DEF H I JK LMNO P Q
[A][B]C[DEF]HI[JK][LMNO]PQ => A B C DEF H I JK LMNO P Q
[A][B]C[DEF]HI[JK][LMNO]P[Q] => A B C DEF H I JK LMNO P Q
[ABCDEFHIJKLMNOPQ] => ABCDEFHIJKLMNOPQ
ABCDEF => A B C D E F
 =>