Morse Code Concentration

set_sign_02a.txt

["set_let_A-F.txt","set_let_F-K .txt","set_let_K-P.txt","set_let_P-U.txt","set_let_U-Z.txt","set_num_0-5.txt","set_num_4-9.txt","set_punct.txt","set_sign_00a.txt","set_sign_01a.txt","set_sign_02a.txt","set_sign_03a.txt","set_sign_04a.txt"]

["A \/ B \/ C \/ D \/ E \/ F","F \/ G \/ H \/ I \/ J \/ K","K \/ L \/ M \/ N \/ O \/ P","P \/ Q \/ R \/ S \/ T \/ U","U \/ V \/ W \/ X \/ Y \/ Z","0 \/ 1 \/ 2 \/ 3 \/ 4 \/ 5","4 \/ 5 \/ 6 \/ 7 \/ 8 \/ 9","[AT_SIGN] \/ [COMMA] \/ [EXCLAIM] \/ [PERIOD] \/ [QUESTION] \/ [SLASH]","73 \/ 88 \/ AR \/ AS \/ BK \/ C","CL \/ CQ \/ CQD \/ CT \/ DE \/ HH","IMI \/ K \/ KA \/ KN \/ QRM \/ QRN","QRO \/ QRP \/ QRT \/ QRZ \/ QSB \/ QSL","QSY \/ QTH \/ R \/ SK \/ SOS \/ VE"]