If you are thinking of experimenting more in bed, or if threesome sex is not something new to you, the following positions are fixed for you, approved by sexologists:
#1 - 69+1
# 2 - Virtual triplets
# 3 - Multiple Oral
# 4 - In the shower
# 5 - Oral-penetrating train
#6 - "Spoon" (luga) treshe
# 7 - Penetration + Stimulation
# 8 - Double penetration
#9 - "Daisy Chain"
# 10 - Double oral
# 11 - Penetration-oral tower
Source: Women's Health