Letters that make self-explanatory
s, a, o, e, f, l, n, p, r, t, y, x are letters that make 'self-explanatory'
Words within self-explanatory
el, LAN, OR, plan, LF, Tory, AN, la, NATO, ELF, at, SE, explanatory, EL, ana, ex, self, LA, tor, Ana, elf, At, La, Se, Na are words within 'self-explanatory'