There are 3 pairs of animals, A, a, B, b, C and c, on one

side of a river. 1 or up to 2 animals must ride a boat to

get across the river. At least one animal has to be on the

boat to drive it. "a" animal is protected by "A" from the

attack of "B" and "C", "b" animal is protected by "B"

from the attack of "A" and "C", and "c" animal is

protected by "C" from the attack of "A" and "B". For

example, "a" is not allowed to be with "B" or "C" without

the presence of "A" in one of the locations, on the sides

of river, or on the boat. Likewise, "b" and "c" need

protection by "B" and "C", respectively. (A, a, B, and C)

in one location is OK, but, (a, B, and b) is not allowed.

Also (a,b) in one locaion is OK, for example.

Find a way(s) to move all three pair of animals to the

other side of the river.