| stipulation(noun, form, action, charge) |
| prerequisite(noun, adjective, form, pass) |
| requirement(noun, form, part, pass) |
| essential(noun, adjective, form, pass) |
| imperative(noun, adjective, form, pass) |
| limitation(noun, form, part, pass) |
| circumstance(noun, form, action, pass) |
| contingency(noun, form, action, cause) |
| element(noun, form, action, cause) |
| environment(noun, form, pass, position) |
| event(noun, form, action, cause) |
| juncture(noun, form, action, cause) |
| occasion(noun, form, action, cause) |
| occurrence(noun, form, action, cause) |
| phase(noun, form, action, cause) |
| time(noun, form, action, cause) |
| accompaniment(noun, form, pass, position) |
| attitude(noun, form, pass, position) |
| category(noun, form, pass, position) |
| chances(noun, form, pass, position) |