C1111233133313231133133313331333133313231121333133313113313232313112221   >>    C111123313331323113313331333133313331323112133313331311331323231311222   <<    C1111233133313231133133313331333133313231121333133313113313232313112223   >>      C1111233133313231133133313331333133313231121333133313113313232313112222   >>