(;GM[1]FF[4]SZ[19]
GN[Vital and non-vital Black-enclosed regions]
PC[http://senseis.xmp.net/?BensonsDefinitionOfUnconditionalLife]AP[GoWiki:2009]
DT[2010-05-25]
C[Diagram from http://senseis.xmp.net/?BensonsDefinitionOfUnconditionalLife

Vital and non-vital Black-enclosed regions]
PL[B]

AB[kh][lh][hi][ii][ji][li][hj][kj][lj][hk][ik][jk]
AW[jg][kg][lg][mg][gh][hh][ih][jh][mh][gi][mi][gj][mj][gk][kk][lk][mk][gl][hl][il][jl][kl]
SQ[ij]


;SQ[ij]
)
