They couldn't have walked more than twenty paces before Jaxom's fingers stumbled over the crack.

Her fingers stumbled for a second, and she had to start over.

Worse, what if she actually hated music and-and- Kevin's fingers stumbled on the strings.

His fingers stumbled once, and he frowned, fleetingly.

Her fingers stumbled over it and it fell to the hall floor with a clink.

His fingers stumbled several times, but at last he had a correct pattern entered.

Her fingers stumbled over the dial, scrabbling at the digits.

His fingers stumbled across the light-switch and flipped it up.

His fingers stumbled on the strings, breaking the spell.

Her own fingers stumbled before she finally had the buttons straightened.