C11112331312111112111133133313331333132112312113313231333133313332233313131   >>    C1111233131211111211113313331333133313211231211331323133313331333223331313   <<    C11112331312111112111133133313331333132112312113313231333133313332233313133   >>      C11112331312111112111133133313331333132112312113313231333133313332233313132   >>