C1111233133313231133133313331333133313231121333133313113313232313112222321   >>    C111123313331323113313331333133313331323112133313331311331323231311222232   <<    C1111233133313231133133313331333133313231121333133313113313232313112222323   >>      C1111233133313231133133313331333133313231121333133313113313232313112222322   >>