en > eu 
/tu/
1 prep. [in direction of] -ra; -(en)gana
2 prep. (with indirect object) -i
3 prep. [as far as] -raino
5 prep. [before] gutxi(ago)
6 prep. [per] -ko, -na
7 prep. [of] -en; -ko
8 prep. [from opinion of] -entzat, -en iritziz, -en arabera
9 prep. (in comparisons) baino
10 adv. [shut] itxita
11 (forming infinitive) ø
12 (following another verb) -t(z)en; -t(z)ea; ø
13 (following an adjective) -t(z)eko
14 (indicating purpose) -t(z)eko, -t(z)earren, subjuntibozko adizkiak
15 (in commands) -t(z)eko
16 (to avoid repetition of infinitive) ø
17 (indicating result) ø
18 (with verb to be) -t(z)ekoa; behar