C1111133313331323223313331333133313311211111211331333132112323223332321   >>    C111113331333132322331333133313331331121111121133133313211232322333232   <<    C1111133313331323223313331333133313311211111211331333132112323223332323   >>      C1111133313331323223313331333133313311211111211331333132112323223332322   >>