C1111133313331323223313331333133313311211111211331333131133133313331323232221   >>    C111113331333132322331333133313331331121111121133133313113313331333132323222   <<    C1111133313331323223313331333133313311211111211331333131133133313331323232223   >>      C1111133313331323223313331333133313311211111211331333131133133313331323232222   >>