#abcd

What does "abcd" mean?
ArtBoardCreativeDrawing, ANAK_BATONAONG_CINTA_DAMAI, ANAK_BATUADEM_CINTA_DAMAI, all_brand_club_diecast, AnyBodyCanDance, Anak_Batonaong_Cinta_Damai, Anak_BatuAdem_Cinta_Damai

abcd-shop12 1329 abcd-2 39019 abcd-arls 1257 abcd-ika 1405 abcd-anailart 895 abcd-osfamosos 100 abcd-efghijklmnopqrstuvwxyz 12218 abcd-world 394 abcd-epot 457 abcd-epoy 534 abcd-epremio 451 abcd-cchallenge 291 abcd-ef1314 208 abcd-esign 4576 abcd-2015 372 abcd-efamosos 233 abcd-e 6804 abcd-uckcalls 168 abcd-2june19th 321 abcd-efshop 2127 abcd-efg store 306 abcd-wedding 310 abcd-ttour 1460 abcd-ef 2587 abcd-efg 5514 abcd-e82 205 abcd-amor 1046 abcd-game1 98 abcd-ogs 192 abcd-ecreto 184 abcd-t 2035 abcd-mc 129 abcd-4l 52 abcd-2013 134 abcd-2014 135 abcd-gala 125 abcd-game 128 abcd-cups 145 abcd-efu 52 abcd-bayeh 2442