C1111133313331323223313331333133313311211111211331333131211111333122221   >>    C111113331333132322331333133313331331121111121133133313121111133312222   <<    C1111133313331323223313331333133313311211111211331333131211111333122223   >>      C1111133313331323223313331333133313311211111211331333131211111333122222   >>