C111123313331323113313331333133313331323131211113313331313331323123232321   >>    C11112331333132311331333133313331333132313121111331333131333132312323232   <<    C111123313331323113313331333133313331323131211113313331313331323123232323   >>      C111123313331323113313331333133313331323131211113313331313331323123232322   >>