C11112331312111112111133133313331333133313123313331323232133221   >>    C1111233131211111211113313331333133313331312331333132323213322   <<    C11112331312111112111133133313331333133313123313331323232133223   >>      C11112331312111112111133133313331333133313123313331323232133222   >>