Las conjunciones de propósito y contingencia

unless

a menos que

before

antes (de) que

provided (that)

con tal (de) que

same subject

conjunction + preposition para, antes de, con tal de, sin... (instead of conjunction + subjunctive)

in case

in caso de que

ORDER-

indicative + conjunction of contingency or purpose + subjunctive (always used in dependent clause- subj) all conjunctions contain que

so that

para que

without, unless

sin que