C11112331312111112111133133313331333132313123133313232213232321   >>    C1111233131211111211113313331333133313231312313331323221323232   <<    C11112331312111112111133133313331333132313123133313232213232323   >>      C11112331312111112111133133313331333132313123133313232213232322   >>