The cycle repeats itself until the ice at the eave forms a dam that literally blocks melt water from draining off of the roof.
(The cycle; repeats; itself; T:until the ice at the eave) (The cycle; forms; a dam that literally blocks melt water from draining off of the roof) (literally blocks; melt; water)
The cycle The cycle literally blocks
repeats forms melt
itself T:until the ice at the eave
a dam that literally blocks melt water from draining off of the roof
water