BBasis[8,{7, 1}] =
{Graph[C1[18], C1[19], C1[21], C1[20], C1[24], C1[23], C1[22], C2[17], 
   Dashed[17, 19], Dashed[17, 18], Dashed[19, 21], Dashed[18, 20], 
   Dashed[21, 23], Dashed[20, 22], Dashed[23, 24], Dashed[22, 24], 
   OV[8, 9, 10], OV[1, 10, 12], OV[2, 9, 11], OV[4, 12, 14], OV[3, 11, 13], 
   OV[7, 14, 16], OV[6, 13, 15], OV[5, 15, 16]]}