Cats are predators, so they know how to camouflage well and disperse throughout the area. Everything you see can be represented as a string $s$ of lowercase latin letters. There's a cat hiding there if you can choose three indices $i<j<k$ such that the string $\overline{s_i s_j s_k}$ differs from the string $'cat'$ by no more than a character in one position.

For example, in the string $'cpython'$ there is a cat hidden, because you can select indices 1, 2, 4, and then the resulting string $'cpt'$ differs from the string $'cat'$ only in the second character.

Your task is to determine whether the cat is hiding in a given line, and if so, find it.