Floodfill string rep:
1, 7, 19, 22 -> OMNNNNNNNNMQXPONNN.WOMMMMMLNNMQXOONNM.XXWVVVTLNNMPXOONNM.XUSSWXULNMMPXONMMM.TQTSKBBIMMMEAFNMMM.ORRRNDBIMMLEAFNMML.NNNNLCCIMMLEANMMML.RKLLMUDKLLKEWNMLLL.WSPPUVKLLLIRWNMLLL.WWVUSLKMMLJWWNMMMK.VNLKJLMMMJPWWNMMMK.NKNNNNNMKMVWWNNNNL.MNOOOONLLUWWWNNONL.NLOONLKPVWWWWPLNLO.UNLLMPUWWWWWWVOMOV
6, 30, 26, 42 -> XXXXXXXXXXXAXXXXXXXX.XAAAAAXXAXXAXXXXXXXX.XAXXXXXXXXXAXXXXXXXX.XAXXXXXXAXXAXXWNECKW.XAXXXXXXAXXAXXNIVWKK.XAAAAAXXAXXAXXEUXXVD.XAXXXXXXAXXAXXBBBAAA.XAXXXXXXAXXAXXEVXXXX.XAXXXXXXAXXAXXNIUWUK.XAXXXXXXAXXAXXXOFBGR.XXXXXXXXXXXXXXXXXXXX.AAAAAAAXXXXXXXXXXXXX
39, 31, 52, 42 -> XAAAAAAXXXXXX.XAXXXXXXXXXXX.XAXXXXXXXWLCE.XAXXXXXXXMIVV.XAAAAAAXXDUXX.XAXXXXXXXBWXX.XAXXXXXXXDUXX.XAXXXXXXXMIVV.XAAAAAAXXWLCE.XXXXXXXXXXXXX.AAAAAAAAXXXXX
29, 55, 52, 60 -> AAKXXXXKAAXXXXXXXXXXXXX.AABUXXUBAAXXXXXXXXXXXXX.AADKXXKDAAXXXOABELWXXWM.AAOBUUBOAAXXXNTWQAKXXMA.AAWDKKDWAAXXXXXXXADXXEA