C312322331333132212111133133313113313331333133313233313232212321   >>    C31232233133313221211113313331311331333133313331323331323221232   <<    C312322331333132212111133133313113313331333133313233313232212323   >>      C312322331333132212111133133313113313331333133313233313232212322   >>