F4 F4 F4 T3p SC F4 B3 is bad because you will drop AF3 and will have the long cast for B3. Aikaal's solution with Transpose is that you immediately do it after T3p, during the GCD.
This doesn't work in practice though, because you will have use F1 before the first F4 since B3 -> F3 the AF3 cuts into the GCD because of the lower cast time of F3.
