c radical consonant.
c = k before a, o, u.
But by 7c = th before i, e.
Then by 2,qu = k before i, e.

Pretérito: saqué.

Presente de Subjuntivo: saque, saques, saque, saquemos saquéis, saquen.

32. Pagar.

g radical consonant.
g = g (hard) before a, o, u.
But by 10g = j before i, e.
Then by 4,gu = g (hard) before i, e.

Pretérito: pagué.

Presente de Subjuntivo: pague, pagues, pague, paguemos, paguéis, paguen.

33. Averiguar.

gu radical consonant.
gu = gw before a, o, u.
But by 4gu = g (hard) before i, e.
Then by 6, = gw before i, e.