ni ... ni neither ... nor
o, u or
o bien or else
ya ... ya whether ... or
bien ... bien either ... or
o...o either ... or
uno ... otro one ... another
tanto ... como as much ... as
pero but
mas but
aunque though, although, even though, in spite of
sin embargo however, nevertheless
no obstante nevertheless
antes rather (formal)
antes bien rather
por lo demás otherwise, apart from that
sino but, except
excepto except, apart from
es decir that is to say, meaning
esto es this is, rather
en cambio wheras