C11112331312111112111133133313331333132313233313331312111133133313332212133211   >>    C1111233131211111211113313331333133313231323331333131211113313331333221213321   <<    C11112331312111112111133133313331333132313233313331312111133133313332212133213   >>      C11112331312111112111133133313331333132313233313331312111133133313332212133212   >>