{{Graph[C1[8], C1[9], C1[10], C2[8], C3[9], Dashed[8, 10], Dashed[9, 10], 
    OV[1, 4, 6], OV[2, 5, 7], OV[3, 6, 7]], 
   Graph[C1[9], C1[10], C1[10], C2[8], C3[9], Dashed[8, 9], Dashed[8, 10], 
    OV[4, 6, 7], OV[1, 5, 6], OV[2, 3, 7]], 
   Graph[C1[9], C1[10], C1[10], C2[9], C3[8], Dashed[8, 9], Dashed[8, 10], 
    OV[5, 6, 7], OV[1, 4, 6], OV[2, 3, 7]], 
   Graph[C1[9], C1[10], C1[10], C2[8], C3[8], Dashed[8, 9], Dashed[9, 10], 
    OV[4, 5, 6], OV[1, 6, 7], OV[2, 3, 7]]}, 
  {BasisVector[2], BasisVector[3], BasisVector[4]}}