C1111133313331323223313331333133313311211111211331333133313332212221   >>    C111113331333132322331333133313331331121111121133133313331333221222   <<    C1111133313331323223313331333133313311211111211331333133313332212223   >>      C1111133313331323223313331333133313311211111211331333133313332212222   >>