トク 
え.る う.る 
() acquire () earn () benefit
                   
とく (adj-na,n) (1) profit, advantage, benefit, gain, (2) (Buddh) rebirth in paradise, entering nirvana
とくとく (adv-to) triumphantly, proudly
とくする (vs-s) to make a profit
うる (suf) (1) (after the -masu stem of a verb) to be able to ..., can ..., (exp) (2) to get, to acquire, to obtain, to procure, to earn, to win, to gain, to secure, to attain
える (v1,vt) (1) to get, to acquire, to obtain, to procure, to earn, to win, to gain, to secure, to attain, (suf,v1,vt) (2) (after the -masu stem of a verb) to be able to ..., can ...
とくい (n,adj-no,adj-na) (1) triumph, prosperity, (2) pride, (3) one's strong point, one's forte, one's specialty, (4) frequent customer (client, etc.)
とくいさき (n) customer, client, patron, clientele, constituency
とくさく (adj-na,n) profitable plan, good plan
とくしつ (n) advantages and disadvantages, plus and minuses
とくてん (n,vs) score, points made, marks obtained, runs
とくひょう (n,vs) number of votes polled, poll votes

Links: KanjiDic: EDict : Wikimedia
Etymologies: 中文字譜 : 説文解字