C1111233131211111211113313331333133313331312331333132331111331333211   >>    C111123313121111121111331333133313331333131233133313233111133133321   <<    C1111233131211111211113313331333133313331312331333132331111331333213   >>      C1111233131211111211113313331333133313331312331333132331111331333212   >>