He thought about the woman who'd just tumbled over the bed with him.

She thought about the two of them tumbling over each other in bed.

Hands reached for them as they tumbled over the floor.

She said it very quickly, the words tumbling over one another.

A hundred questions were tumbling over one another to get out.

Her voice was quite wild, the words tumbling over themselves.

The child tumbled over the chair when he ran into the room.

Her words began to come faster, tumbling over one another.

By this time the older children were tumbling over one another in the snow.

All this she said in a rush, the words tumbling over themselves.