import sys
import math

# Auto-generated code below aims at helping you parse
# the standard input according to the problem statement.

m = [c for c in input().upper() if c.isalpha()]
for a,b in zip(m,m[1:]):
    if a!=b:
        d=b>a
        break
r=[]
for a,b in zip(m,m[1:]):
    if b>a:
        r+=1,
    elif b<a:
        r+=0,
    else:
        r+=r[-1] if r else d,
r = [r[0]]+r
from itertools import*
res=[]
for k,v in groupby(r):
    l=len([*v])
    res+=str(l),
print(*res,sep='-')