C111123313331323113313331333133313331122112312111112111111331133132222231   >>    C11112331333132311331333133313331333112211231211111211111133113313222223   <<    C111123313331323113313331333133313331122112312111112111111331133132222233   >>      C111123313331323113313331333133313331122112312111112111111331133132222232   >>