T1H4I1R1D2
9 points
THIRD is validvalid
one of three equal parts [n THIRDS]
number three in sequence [adj THIRDLY] / to divide by three [v -ED, -ING, -S]
one of three equal parts [n THIRDS]
number three in sequence [adj THIRDLY] / to divide by three [v -ED, -ING, -S]