okay, now everything's clear: so it's basically four countries which all border each other with the exception of b and d.
scenario 1: let's look at country two first. the move from a to c is supported by b. the support isn't cut (assuming that there's no one coming from the south), so the army in a can move to c. the support to a for d is cut by the attack, but since a is vacated now anyway, d moves there.
tl;dr: b stays, a is in c, d is in a, c is dislodged.
scenario 2: this is exactly the same, only the other way round. d stays, c is in a, b is in c, a is dislodged.