Variating PvT

The original build:

If the Terran expands before rax
....expand right after gass and make 8 gates
....attack from 8 gates before 9mins

If the Terran expands after rax, before gass
....stop making probes at 3:30 and expand asap
....attack from 5 gates before 9mins 


Variants:

If the Terran takes gass before rax
....scout for proxy
....???

If the Terran takes gass fast after rax
....if no marine
........chrono a stalker out

....if marine kills probe
.........no stalker required?

........make momma at 5:00
........make robo at 6:00
....???