I noticed an acceptable alternative of the first person singular verb ending. I dont know if

1. this is just an abbreviation or changes the meaning
2. is associated to aspect,
3. is associated to verbs of motion,
4. has analogues in other persons

eg

я бегу - я бегаю

I noticed an acceptable alternative of the first person singular verb ending. I don't know if

1. this is just an abbreviation or changes the meaning
2. is associated to aspect,
3. is associated to verbs of motion,
4. has analogues in other persons

e.g.

я бегу - я бегаю