percalleo
Could not find percallueris in Logeion dictionaries.
percallueris Verb: future perfect active indicative 2nd singular, Verb: perfect active subjunctive 2nd singular of percalleo
per-calleo, ŭi, ēre, v. a.,
- to know or understand well: quinque et viginti gentium linguas, Gell. 17, 17, 2.