Letters that make singular form
s, a, o, f, g, l, n, m, r, i, u are letters that make 'singular form'
Words within singular form
OR, la, si, FO, ar, ng, SI, singular, GU, in, form, sin, gula, AR, IN, LA, Gula, Sin, NGU, Ar, In, La, Si, sing are words within 'singular form'