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10 HOME: rem test program 20 PRINT "TEST PROGRAM" 30 GOSUB 100 40 END 100 INPUT "ENTER ";ABRACADABRA,B,C 110 PRINT A;B;C : : PRINT 120 RETURN 130 rem unreachable 140 if aa123 then 10 150 & ("ABRACADABRA",ABRACADABRA)