a and b YES! a and c YES! a and d YES! a and e YES! a and f YES! a and g YES! a and h YES! a and i YES! a and j YES! a and fail. b and c YES! b and d YES! b and e YES! b and f YES! b and g YES! b and h YES! b and i YES! b and j YES! b and fail. c and d YES! c and e YES! c and f YES! c and g YES! c and h YES! c and i YES! c and j YES! c and fail. d and e YES! d and f YES! d and g YES! d and h YES! d and i YES! d and j YES! d and fail. e and f YES! e and g YES! e and h YES! e and i YES! e and j YES! e and fail. f and g YES! f and h YES! f and i YES! f and j YES! f and fail. g and h YES! g and i YES! g and j YES! g and fail. h and i YES! h and j YES! h and fail. i and j YES! i and fail. j and fail. 1527