perl -lane 's/\W//g,$h{lc$_}++for@F}{print"$_ => $h{$_}"for keys%h' fi
+le
[download]

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)

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