C11112331312111112111133133313331333132313233313231323223323131   >>    C1111233131211111211113313331333133313231323331323132322332313   <<    C11112331312111112111133133313331333132313233313231323223323133   >>      C11112331312111112111133133313331333132313233313231323223323132   >>