reserve S for with_non_trivial_Instructions COM-Struct;
reserve i,j,k for No-StopCode Instruction of S,
        I,J,K for MacroInstruction of S;
reserve i1,i2,i3,i4,i5,i6 for No-StopCode Instruction of S;

theorem Th16:
 card(i1 ';' i2 ';' i3 ';' i4 ';' i5 ';' i6) = 7
proof
 thus card(i1 ';' i2 ';' i3 ';' i4 ';' i5 ';' i6)
    = card(i1 ';' i2 ';' i3 ';' i4 ';' i5) + 1 by Th11
   .= 6 + 1 by Th15
   .= 7;
end;
