If it makes you feel good: the first op, and the sixth dvd cover implies chiyoxtsubomi :D.. That leaves,besides the 2 cannon couples: tamaoxyaya (yey!), kizunaxremon (oh surprise!) and chikaruxkagome (cute not pedo).
I honestly suspected those couples: Tamao and Nagasi, Shizuma and Miyuki, Hikari and Amane, Kaname and Momomi, Tsubomi and Yaya, Remon and Kizuna, Chiyo and Kagome, Chikaru and Shion. That is just my personal opinion. Please do not take it too seriously.