s = input();
 
news=''

for i in range(len(s)-1):
    if (s[i]=='-')or(s[i]=='.'):
        continue
    elif s[i]==',':
        news=news+' '+s[i]
    else:
        news=news+s[i]
            
if (s[len(s)-1]!='-')or(s[i]!='.'):
        news=news+s[len(s)-1]
                
print(news)