a__fromXconsmarkXfromsXa__headconsXXSmarkXa__2ndconsXXSa__headmarkXSa__take0XSnila__takesNconsXXSconsmarkXtakeNXSa__sel0consXXSmarkXa__selsNconsXXSa__selmarkNmarkXSmarkfromXa__frommarkXmarkheadXa__headmarkXmark2ndXa__2ndmarkXmarktakeX1X2a__takemarkX1markX2markselX1X2a__selmarkX1markX2markconsX1X2consmarkX1X2marksXsmarkXmark00marknilnila__fromXfromXa__headXheadXa__2ndX2ndXa__takeX1X2takeX1X2a__selX1X2selX1X2a__fromXmarkXa__headconsXXSmarkXa__2ndconsXXSmarkXSa__2ndconsXXSa__headmarkXSa__takesNconsXXSmarkXa__sel0consXXSmarkXa__selsNconsXXSmarkXSa__selsNconsXXSmarkNa__selsNconsXXSa__selmarkNmarkXSmarkfromXmarkXmarkfromXa__frommarkXmarkheadXmarkXmarkheadXa__headmarkXmark2ndXmarkXmark2ndXa__2ndmarkXmarktakeX1X2markX2marktakeX1X2markX1marktakeX1X2a__takemarkX1markX2markselX1X2markX2markselX1X2markX1markselX1X2a__selmarkX1markX2markconsX1X2markX1marksXmarkXtrue