C1111233133313231133133313331333133313231121333133313133313112122321   >>    C111123313331323113313331333133313331323112133313331313331311212232   <<    C1111233133313231133133313331333133313231121333133313133313112122323   >>      C1111233133313231133133313331333133313231121333133313133313112122322   >>