C1111133313331323223313331333133313331333232233133112111113211232311   >>    C111113331333132322331333133313331333133323223313311211111321123231   <<    C1111133313331323223313331333133313331333232233133112111113211232313   >>      C1111133313331323223313331333133313331333232233133112111113211232312   >>