When, from the Windup Position, the pitcher starting (a) with glove hand up in front of his boddy and pithcing hand at his side, (b) both hand together up in front of his body, or (c) both hands at his side, my start his motion to deliver without interuption.

My understanding of 8.01(a) is that it is a balk, with runners on base, if in (a) above the pitching hand comes up to the glove hand and motion stops before continuing to pitch, or if in (c) above both hands come up to in front of the body and motion stops before continuing to pitch.

In (a) and (c), the pitching motion has started once the hand(s) start to move up. Am I wrong?