C11112331333132311331333133313331333132313233313331321123233111   >>    C1111233133313231133133313331333133313231323331333132112323311   <<    C11112331333132311331333133313331333132313233313331321123233113   >>      C11112331333132311331333133313331333132313233313331321123233112   >>