C3123121111113313121111331333133313331333223313331333133112323132223321   >>    C312312111111331312111133133313331333133322331333133313311232313222332   <<    C3123121111113313121111331333133313331333223313331333133112323132223323   >>      C3123121111113313121111331333133313331333223313331333133112323132223322   >>