I found XNK2838 in:
AS31.3-The Sex Shuffle,,, loop CC1364-Arse-Fucked Nympho
EX15.1-Lonesome Lovers,,, loop SO220.4-Out Door Fun
LL4.4-Tender Evening,,, loop SR875-Lesbian Lust
Lesbian Fantasy.2-Three Juicy Cunnies,,, loop EF96-Lesbian Thai Maid
CG9.5, Cilla
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Thanks to all scanners/posters