#fg1

What does "fg1" mean?
feddah_gallery_10, fitness_girl_12345

fg1-2mn15 53 fg1-civic 53 fg1-7an 80 fg1-50 86 fg1-020 75 fg1-01 453 fg1-80 298 fg1-40 77 fg1-01phto1k 307 fg1-00 141 fg1-000 366 fg1-10 52 fg1-squad 70 fg1-society 118 fg1-3420 39 fg1-nation 58 fg1-9 338 fg1-3 5162 fg1-5sp 50 fg1-60 42 fg1-6 431 fg1-4 422 fg1-6 35 fg1-0 988 fg1-1mm 39 fg1-16 38 fg1-5sm 34 fg1-com 33 fg1-1 240 fg1-7 375 fg1-5 369 fg1-8 66