newString = input()
newString2 = []
for counter in range (0,len(newString)):
    if newString[counter] == '-' or newString[counter] == '.':
        pass
    else:
        newString2.append(newString[counter])
    if counter < len(newString) - 1:
        if newString[counter + 1] == ",":
            newString2.append(" ")
for counter in newString2:
    print(counter, end="")