DIM ch$(26)
FOR i = 1 TO 26
ch$(i) = CHR$(ASC("a") + i - 1)
NEXT

DIM cw(26) AS LONG

PRINT "text:"
INPUT "", s$
DO WHILE s$ "*"
s$ = s$ + " "
iw = 0
FOR i = 1 TO LEN(s$)
c$ = MID$(s$, i, 1)
IF iw = 0 AND c$ " " THEN
iw = 1
idx = ASC(c$) - ASC("a") + 1
cw(idx) = cw(idx) + 1
ELSEIF iw = 1 AND c$ = " " THEN
iw = 0
END IF
NEXT
INPUT "", s$
LOOP

FOR i = 1 TO 25
m = i
FOR j = i TO 26
IF cw(j) > cw(m) OR (cw(j) = cw(m) AND ch$(j) < ch$(m)) THEN
m = j
END IF
NEXT
IF m i THEN
tmp = cw(m)
cw(m) = cw(i)
cw(i) = tmp
tmp$ = ch$(m)
ch$(m) = ch$(i)
ch$(i) = tmp$
END IF
NEXT

FOR i = 1 TO 26
IF cw(i) 0 THEN
PRINT ch$(i) + ":"; cw(i)
END IF
NEXT