C11112331333132311331333133313331333132313233313331333131213221211   >>    C1111233133313231133133313331333133313231323331333133313121322121   <<    C11112331333132311331333133313331333132313233313331333131213221213   >>      C11112331333132311331333133313331333132313233313331333131213221212   >>