아무 + Noun can be combined with particles, except for 은/는, 을/를 or 이/가.
When combined though, (이)나 and 도 has to be attached AFTER the particle.
e.g. 아무한테나 (to anyone)
아무 교실에서나 (in any classroom)
아무에게도 (to no one)
아무 데에서도 (in nowhere)
아무 + Noun can be combined with particles, except for 은/는, 을/를 or 이/가.
When combined though, (이)나 and 도 has to be attached AFTER the particle.
e.g. 아무한테나 (to anyone)
아무 교실에서나 (in any classroom)
아무에게도 (to no one)
아무 데에서도 (in nowhere)