C11112331312111112111133133313331333133313123313331333131211331323132321   >>    C1111233131211111211113313331333133313331312331333133313121133132313232   <<    C11112331312111112111133133313331333133313123313331333131211331323132323   >>      C11112331312111112111133133313331333133313123313331333131211331323132322   >>