C1111133313331323223313331333133313331333131211113313331323133313331333233211   >>    C111113331333132322331333133313331333133313121111331333132313331333133323321   <<    C1111133313331323223313331333133313331333131211113313331323133313331333233213   >>      C1111133313331323223313331333133313331333131211113313331323133313331333233212   >>