| ascertain(verb, place, part, separate, mark) |
| be acquainted(verb, have, notice, experience) |
| be cognizant(verb, have, notice, experience) |
| be conversant in(verb, have, notice, experience) |
| be informed(verb, have, notice, experience) |
| be learned(verb, have, notice, experience) |
| be master of(verb, have, notice, experience) |
| be read(verb, have, notice, experience) |
| be schooled(verb, have, notice, experience) |
| be versed(verb, have, notice, experience) |
| cognize(verb, have, notice, experience) |
| experience(verb, get, have, notice) |
| fathom(verb, have, notice, realize) |
| feel certain(verb, expression, have, notice) |
| figure out(expression, place, part, separate, mark) |
| get the idea(expression, idiom, have, notice) |
| grasp(verb, have, notice, realize) |
| have down pat(expression, idiom, have, notice) |
| have information(verb, expression, have, notice) |
| have knowledge of(expression, idiom, get, have) |