fromXconsXfromsXheadconsXXSX2ndconsXXSheadXStake0XSniltakesNconsXXSconsXtakeNXSsel0consXXSXselsNconsXXSselNXSfrom1cons2s1head12nd1take200nil0sel2OUTERMOST./TRS/outermost/nontermin/CSR/Ex7_BLR02.trs