We consider a recently defined notion of k-abelian equivalence of words by
concentrating on avoidance problems. The equivalence class of a word depends on the
numbers of occurrences of different factors of length k for a fixed natural
number k and
the prefix of the word. We have shown earlier that over a ternary alphabet k-abelian squares cannot be
avoided in pure morphic words for any natural number k. Nevertheless,
computational experiments support the conjecture that even 3-abelian squares can be
avoided over ternary alphabets. In this paper we establish the first avoidance result
showing that by choosing k to be large enough we have an infinite
k-abelian
square-free word over three letter alphabet. In addition, this word can be obtained as a
morphic image of a pure morphic word.