Polycarp is very careful. He even types numeric sequences carefully, unlike his classmates. If he sees a sequence without a space after the comma, with two spaces in a row, or when something else does not look neat, he rushes to correct it. For example, number sequence written like "1,2,3,...,10" will be corrected to "1,2,3,...,10".

In this task you are given a string s, which is composed by a concatination of terms, each of which may be:

• a positive integer of an arbitrary length (leading zeroes are not allowed),
• a "comma" symbol (","),
• a "space" symbol (" "),
• "three dots" ("...", that is, exactly three points written one after another, also known as suspension points).

Polycarp wants to add and remove spaces in the string s to ensure the following:

• each comma is followed by exactly one space (if the comma is the last character in the string, this rule does not apply to it),
• each "three dots" term is preceded by exactly one space (if the dots are at the beginning of the string, this rule does not apply to the term),
• if two consecutive numbers were separated by spaces only (one or more), then exactly one of them should be left,
• there should not be other spaces.

Automate Polycarp's work and write a program that will process the given string s.