X. I thought of the answer as correct to how to educate children.

Y. I thought of the answer to how to educate children as correct.

Z. I found his plan pretty good on how to educate children.

W. I found his plan on how to educate children pretty good.

Q) Are X,Y,Z,W all correct English?

See a translation

@MetRon

A. I just found the solution to how to transplant the lung into the patient possible.

B. I just found the solution possible to how to transplant the lung into the patient.

Maybe are both A and B acceptablely correct English?

I'm not quite sure especially whether the sentence structure of B works.

I think that B flows better because since "to how~" is too long, it seems better to put "possible" in front of "to how~", rather than after "to how~".

the solution + "to how"+ possible vs the solution + possible + "to how"

@MetRon

thanks a lot!

@MetRon

C1. I found the plan to change Mars like Earth feasible.
C2. I found the plan feasible to change Mars like Earth.
E1. I found the plan on changing Mars like Earth feasible.
E2. I found the plan feasible on changing Mars like Earth.

I just made these four sentence after noticing that A and B are not good examples.

Q1) Are all the sentences C1,C2,E1,E2 correct English?

Q2) Are the sentence structures of C2 and E2 acceptable?