C11112331312111112111133133313331333132322121111331322132123231   >>    C1111233131211111211113313331333133313232212111133132213212323   <<    C11112331312111112111133133313331333132322121111331322132123233   >>      C11112331312111112111133133313331333132322121111331322132123232   >>