C1111121111331311211331333133313331333133313321333133313331333231221   >>    C111112111133131121133133313331333133313331332133313331333133323122   <<    C1111121111331311211331333133313331333133313321333133313331333231223   >>      C1111121111331311211331333133313331333133313321333133313331333231222   >>