This　paper　presents　a　flexible　runs-aware　PRL　coding　method　whose　coding　algorithm　is　simple　and　easy　to　implement.　The　internal　2(-n)　-PRL　coding　iteratively　codes　2　(n)　runs　of　compatible　or　inversely　compatible　patterns　inside　a　single　segment.　The　external　N-PRL　coding　iteratively　codes　flexible　runs　of　compatible　or　inversely　compatible　segments　across　multiple　segments.　The　decoder　architecture　is　concise.　The　benchmark　circuits　verify　the　flexible　runs-aware　PRL　coding　method,　the　experimental　results　show　it　obtains　higher　compression　ratio　and　shorter　test　application　time.