RosettaCodeData/Task/ABC-problem/J/abc-problem-4.j

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Blocks=: >;:'BO XK DQ CP NA GT RE TG QD FS JW HU VI AN OB ER FS LY PC ZM '
ExampleWords=: ;: 'A BaRK BOoK tREaT COmMOn SqUAD CoNfuSE '
canform=:4 :0
word=: toupper y
need=: #/.~ word,word
relevant=: (x +./@e."1 word) # x
candidates=: word,"1>,{ {relevant
+./(((#need){. #/.~)"1 candidates) */ .>:need
)