Floodfill string rep:
0, 4, 28, 20 -> IIIIIIIIIIIIIIIIIIIIIIIIIIII.IIIIIIIIIIIIIIIIIILMIIIIIIII.IIIIIIIIIIIIIIIIIIRPIIIIIIII.IOUTPUPILSUTOIIIJSUURJLSUTOI.LUSMRUOKTSMPUOIIILURKKTSMPUO.NUMIMUPOUMIJTRIIIKTPINUMIJTR.OULILUPPULIJSSJIIKTPIPULIJSS.NUMILUPNUMIJTRIIIKTPINUMIJTR.LUSMRUOKTSMPUNIIIKTSLKTSMPUN.IOUTPUOILSUTOIIIIIQURJLSUTOI.IJJILUOIIIIIIIIIIIIIIIIIIIII.KUSMQULIIIIIIIIIIIIIIIIIIIII.INTUTNIIIIIIIIIIIIIIIIIIIIII.IIIIIIIIIIIIIIIIIIIIIIIIIIII.IIIIIIIIIIIIIIIIIIIIIIIIIIII.IIIIIIIIIIIIIIIIIIIIIIIIIIII
32, 4, 56, 20 -> IIIIIIIIIIIIIIIIIIIIIIII.IIIIIIIIIIIIIIIIIIIIIIII.IIIIIIIIIIIIIIIIIIIIIIII.UQSURJINTUSKIIOUTPUPIMSU.UTLOUPLUQMTRILUSMRUOLURL.UPIJTRJKJIRSJNUMIMUPOUMI.UOIJSSKRUUUSJOULILUPPUUU.UQIJTRQUMJSSJNUMILUPOUNK.UTNPUPPUNNUTKLUSMRUOLURL.UQSURJKTUQNUQJOUTPUOIMTU.UOIIIIIIIIIIIIJJILUOIIII.UOIIIIIIIIIIIKUSMQULIIII.UOIIIIIIIIIIIINTUTNIIIII.IIIIIIIIIIIIIIIIIIIIIIII.IIIIIIIIIIIIIIIIIIIIIIII.IIIIIIIIIIIIIIIIIIIIIIII