[lemma="``" | tag=VBZ | □]
[lemma="``" | tag=VBZ | □ | □]
[lemma="``" | tag=VBZ | □=□]
" The huge difference in letter-frequency deviation reinforces the conclusion from the analysis of vowel frequency that the pick of letters in a hand does not represent a statistically random letter selection and is therefore unfair to the player of the game . For perfectly periodic waves , destructive interference occurs whenever one wave lags behind the other by half a wavelength , one-and-a-half wavelengths , two-and-a-half wavelengths , and so on . That was when computer scientist Leonard M. Adleman of the University of Southern California , using techniques from molecular biology , manipulated strands of DNA to solve a mathematical problem : Given seven points linked by one-way paths , find a route that visits each point once on the way from a specified starting point to a given end point . " The algorithm ends when the hound catches the hare , " Brill notes . " If this trend continues , it indicates a higher liquidity in auction markets where sellers do not need as much time to liquidate items placed on sale , " Wood says .