C1111233131211111211113313331333133313232212111133131211331333132211111   >>    C111123313121111121111331333133313331323221211113313121133133313221111   <<    C1111233131211111211113313331333133313232212111133131211331333132211113   >>      C1111233131211111211113313331333133313232212111133131211331333132211112   >>