指は鍵盤のあちらこちらに動きました。

finger; toe; digit

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

keyboard (e.g. piano, computer)

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

that way (direction distant from both speaker and listener); over there; yonder; that one (something physically distant from both speaker and listener, or something not visible but known by both speaker and listener); that; that person (someone physically distant from both speaker and listener, or someone not present but known by both speaker and listener); there (place distant from both speaker and listener); over there; foreign country (esp. a Western nation)

this way (direction close to the speaker or towards the speaker); this direction; here (place close to the speaker or where the speaker is); this one (something physically close to the speaker); I; me; we; us; this person (someone physically close to the speaker and of equal or higher status)

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

to move; to stir; to shift; to shake; to swing; to operate; to run; to go; to work; to be touched; to be influenced; to change; to vary; to fluctuate; to waver; certain; factual; to be transferred