C1111233133313231133133313331333133313231121333133313331323223332212221   >>    C111123313331323113313331333133313331323112133313331333132322333221222   <<    C1111233133313231133133313331333133313231121333133313331323223332212223   >>      C1111233133313231133133313331333133313231121333133313331323223332212222   >>