Letters that make present perfect tense
s, e, f, n, p, c, r, t are letters that make 'present perfect tense'
Words within present perfect tense
ER, RES, RF, pe, re, te, PR, NT, EC, sen, en, perfect tense, present perfect, SE, resent, ESE, perfect, present, sent, ten, tense, ECT, CT, Re, Es, Er, Fe, Pr, Rf, Se, Te are words within 'present perfect tense'