Nothing happens to the ice cube until the surface water melts a bit to allow heating to begin.
(Nothing; happens; to the ice cube; T:until the surface water melts a bit to allow heating to begin) (the surface water; melts; a bit; to allow heating to begin)
Nothing the surface water
happens melts
to the ice cube T:until the surface water melts a bit to allow heating to begin
a bit to allow heating to begin