que who, whom, which, that
o que, a que, os que, as que the one that/who, the ones that/who, what
quem who, whom, the one/the ones who
onde where, in which
aonde where donde from where, from which
o qual, a qual, os quais, as quais who, whom, which, that
cujo, cuja, cujos, cujas whose, of whom, of which
quanto, quanta, quantos, quantas
all that/who, everything that, everyone who