C11112331312111112111133132313331333133313233313331312331121221   >>    C1111233131211111211113313231333133313331323331333131233112122   <<    C11112331312111112111133132313331333133313233313331312331121223   >>      C11112331312111112111133132313331333133313233313331312331121222   >>