1	arēna	nominative case, singular	nominative case, singular
2	arēnas	genitive case, singular	genitive case, singular
3	arēnai	dative case, singular	dative case, singular
4	arēnu	accusative case, singular	accusative case, singular
5	arēnu	instrumental case, singular	instrumental case, singular
6	arēna	locative case, singular	locative case, singular
7	arēna	vocative case, singular	vocative case, singular
8	arēnas	nominative case, plural	nominative case, plural
9	arēnu	genitive case, plural	genitive case, plural
10	arēnam	dative case, plural	dative case, plural
11	arēnas	accusative case, plural	accusative case, plural
12	arēnam	instrumental case, plural	instrumental case, plural
13	arēnas	locative case, plural	locative case, plural
14	arēnas	vocative case, plural	vocative case, plural