C1111233131211111211113313331333133313232212111133131133133313331323312111221   >>    C111123313121111121111331333133313331323221211113313113313331333132331211122   <<    C1111233131211111211113313331333133313232212111133131133133313331323312111223   >>      C1111233131211111211113313331333133313232212111133131133133313331323312111222   >>