s/he sees him/her/them [obviative]
they see him/her/them [obviative]
s/he or they [obviative] are seen by her/him
s/he or they [obviative] are seen by them
s/he sees him/her/them [obviative]
they see him/her/them [obviative]
s/he or they [obviative] are seen by her/him
s/he or they [obviative] are seen by them