C31321211111333132331211113313331333133313331333133313331333133313112232212121   >>    C3132121111133313233121111331333133313331333133313331333133313331311223221212   <<    C31321211111333132331211113313331333133313331333133313331333133313112232212123   >>      C31321211111333132331211113313331333133313331333133313331333133313112232212122   >>