C111123313331323113313331333133313331323131211113313113313331122313233231   >>    C11112331333132311331333133313331333132313121111331311331333112231323323   <<    C111123313331323113313331333133313331323131211113313113313331122313233233   >>      C111123313331323113313331333133313331323131211113313113313331122313233232   >>