(B)0[mrse =
  qqwqqqqqqqqqqqqqqqqqqqwqqq> relation-clause qqwqqqqqqqqqqqqqqqqqqwqk
    mqq> first-clause qqj                       mq> cross-clause qqj x
                                                                     x
   lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq<qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj
   mwqqqqqqqqqqqqqqqqqqwqwqqqqqqqqqqqqqqqqqqqqwqwqqqqqqqqqqqqqqqqqqwqq>
    mqq> with-clause qqj mqq> reduce-clause qqj mqq> sort-clause qqj