C11112331312111112111133132313331333133313233313331312111133112132231   >>    C1111233131211111211113313231333133313331323331333131211113311213223   <<    C11112331312111112111133132313331333133313233313331312111133112132233   >>      C11112331312111112111133132313331333133313233313331312111133112132232   >>