#cb

What does "cb" mean?
color_bob, CityBrix, CapeBojeador, createcaptura_bnw, contrast_bnw, collection_bw, createcapture_bnw, CarsinBursa, cali_beezee, cali_bikes, cali_bike, coke_bike, cr_biw, classic_box, CarrotvsBailey, campania_bestsunset, creamberBPOM, CateBlanchet, ColdBlooded, CiudadBolivar, ci_bengkulu, clubBangers, collegeBreak, CoverBoys, ColdBloooded, CountryBoys, CarterasBohembag, CreateBalance, CoverBrasil, CollegeBound

cb-r 80717 cb-d 70331 cb-s 22667 cb-a 13236 cb-c 13022 cb-f 6660 cb-e 6418 cb-j 5117 cb-i 5109 cb-t 5006 cb-b 4988 cb-m 3233 cb-g 3218 cb-n 2427 cb-k 1918 cb-bf 14231 cb-7 2116 cb-u 3130 cb-l 3079 cb-p 1668 cb-o 1545 cb-2 1525 cb-w 1503 cb-us 13185 cb-jr 12177 cb-ü 3296 cb-jj 7312 cb-ellemask 12936 cb-indonesia 23497 cb-750 5024 cb-views 18404 cb-100 5418 cb-r1000rr 17692 cb-r600rr 19121 cb-fc 2862 cb- colorsplash 13822 cb-tl 2223 cb-racing 9326 cb-150r 5195 cb-gb 2164 cb-ffgiveaway2016 10650 cb-r250 5646 cb-r150 5584 cb-reezy 6554 cb-r600 4895 cb-rnation 4911 cb-doil 4164 cb-1000 3730 cb-1000r 4341 cb-r1000 4416 cb-p up 3504 cb-slabels 4234 cb-550 2148 cb-r150r 3192