C1111121111331311211331333133313331333133313121111331323223313231231221   >>    C111112111133131121133133313331333133313331312111133132322331323123122   <<    C1111121111331311211331333133313331333133313121111331323223313231231223   >>      C1111121111331311211331333133313331333133313121111331323223313231231222   >>