Separate Text In One Cell

I am try to separate my data from A1 to B1,C1, D1....... Here is what it look like in A1

C102, C110, C114, C116, C118, C120, C125, C128, C130, C131, C132, C134, C135, C139, C140, C143, C144, C19, C21, C22, C27, C30, C38, C40, C50, C56, C57, C59, C6, C60, C61, C69, C85, C88, C90, C94, C98

I want to separate them into several cells. Each cell can only have 30 characters or less. You can not cut it in the middle of the data.

After your separate B1 should be "C102, C110, C114, C116, C118," (30 characters)
C1 should be "C120, C125, C128, C130, C131," (30 Characters)
D1 should be "C132, C134, C135, C139, C140,"(30 characters)
E1 should be.......... till the end.

I try to several functions too. But it does not works.