theorem ThSTC0IIS8: :: WALLACE1:7

for x1, x2, x3, x5, x6, x7 being non pair set holds
( x1 in InputVertices (STC0IIStr (x1,x2,x3,x5,x6,x7)) & x2 in InputVertices (STC0IIStr (x1,x2,x3,x5,x6,x7)) & x3 in InputVertices (STC0IIStr (x1,x2,x3,x5,x6,x7)) & x5 in InputVertices (STC0IIStr (x1,x2,x3,x5,x6,x7)) & x6 in InputVertices (STC0IIStr (x1,x2,x3,x5,x6,x7)) & x7 in InputVertices (STC0IIStr (x1,x2,x3,x5,x6,x7)) )