First base (342 pages)
First call resolution (323 pages)
First day (402 pages)
First lien (370 pages)
First order differential equation (205 pages)
First to Bingo (459 pages)
First to file (299 pages)
First to invent (329 pages)
First-order differential equation (251 pages)
First-rate (629 pages)

First-time In detail
First-timer offer (214 pages)
Refusal (388 pages)
Refusal (388 pages)
Refusal to adapt (260 pages)
Refusal to adapt (260 pages)
Right of first refusal agreement (410 pages)
Right of recoupment (152 pages)
Right to Repair (291 pages)

Right to assign (213 pages)
Right to be free from discrimination on the basis of race (377 pages)
Right to education (449 pages)
Right to marriage (379 pages)
Right to object to addition (309 pages)
Right to object to broadcast (195 pages)
Right to object to destruction (429 pages)
Right to object to intertextuality (136 pages)
Right to object to presentation (232 pages)
Right to security (474 pages)
Rightness (454 pages)