C1111133313331323223313331333133313331323131313121111331322311121   >>    C111113331333132322331333133313331333132313131312111133132231112   <<    C1111133313331323223313331333133313331323131313121111331322311123   >>      C1111133313331323223313331333133313331323131313121111331322311122   >>