Floodfill string rep:
984, 80, 992, 84 -> EEFGGGFE.EFGLLLGF.EFJPQOIF.EFIQPPJG
1044, 96, 1052, 100 -> FHJJHFFE.GJRSQIFE.GJSTSIGE.FJQNRIFE
352, 100, 356, 104 -> HHGF.USJH.QPHG.IHED
388, 100, 396, 108 -> EFFFFFFE.FFFFFGFF.FFHIHHFF.FGLOPMGF.FGMQSPHF.FHLOONHG.FFIJJIGF.FFFFGGFF
932, 108, 936, 112 -> FGFF.HLKH.HNNL.IKJL
880, 160, 884, 164 -> LIFF.NJGE.IIFE.FFEE
1160, 164, 1168, 172 -> FFFGGGFF.FGGIIHHF.FGJQQLHG.GGKSTRJG.FGKROSJG.FGHKIKHG.FFGGGGGF.EFFFGGFF
1040, 176, 1044, 180 -> FFFF.FGHF.HKLK.GMLN
732, 180, 740, 184 -> EFFHGFFE.EFHLNLHF.EFIOOOHF.FFHNLOHF
668, 196, 672, 200 -> HHGF.NLJH.ORNJ.LMLJ
1284, 200, 1288, 204 -> QQLH.QROH.NLMI.IHHG
200, 204, 208, 208 -> FFGIJJHG.FGHNQQLH.FGHOQRNH.FGHNMOLG
668, 224, 672, 228 -> GGGF.HKKG.IMNL.IKJK
1128, 228, 1136, 236 -> FFGHHHHG.FGHIJJIG.FGINQNKI.GHIORROI.FGINPPNI.FGHJKKJH.FGGHHHHG.FFGFGGGG
864, 236, 868, 240 -> GFFF.FNIH.INTK.JNTK
1288, 236, 1296, 240 -> GGGGHGGG.GGIJJHGG.GHMNLJHG.HHMONKHG
604, 240, 608, 244 -> GIKI.HLPO.GLOO.GKKL
376, 264, 384, 272 -> FGHHHHGG.GGHIKJIH.GHIPQQKH.HHKSUTNI.GHKRQSMI.GHIMLNKI.GGHIIIIH.GGGGHHGG
1148, 264, 1152, 268 -> IHHH.LNKI.OQQK.ONRK
276, 300, 280, 304 -> IIHH.NMJI.QROJ.POOJ
336, 312, 340, 316 -> KLKI.NNNJ.NNOJ.KKLI
872, 336, 876, 340 -> HHHH.IIHH.LLJH.MNKI
1336, 356, 1344, 360 -> IJLLLJII.IJMNNKJI.IJLMMKJI.IJKKKJJI
556, 380, 560, 384 -> JKKJ.JMNN.JNPP.JNNN
944, 392, 952, 400 -> IIJJJJJI.JJJJJJKJ.JJJKKKJJ.JJJLOOLK.JJKMRSQL.JJKNRQSL.JJJLNMOK.JJJKKKJJ
900, 404, 908, 408 -> JIJJJJJI.JJJKKKJJ.JJKMNLKJ.JJKNOMKJ
684, 408, 688, 412 -> LLLJ.JNLJ.KJMJ.DHHH