Letters that make progressive aspect
s, a, o, e, g, p, c, r, t, i, v are letters that make 'progressive aspect'
Words within progressive aspect
aspect, RES, spec, pe, re, si, PR, EC, Ro, SI, SS, progressive, pro, iv, as, progress, ECT, CT, IV, asp, AS, ogre, ogress, Re, As, Es, Pr, Si are words within 'progressive aspect'