C1111133313331323223313331333133313331333232233133112111133221132321   >>    C111113331333132322331333133313331333133323223313311211113322113232   <<    C1111133313331323223313331333133313331333232233133112111133221132323   >>      C1111133313331323223313331333133313331333232233133112111133221132322   >>