13 basic surfaces


(1) \(3A_2\)
(2) \(A_1+2A_3\)
(3) \(2D_4\)
(4) \(A_2+E_6 (1)\)

(5) \(A_2+E_6 (2)\)
(6) \(A_3+D_5\)
(7) \(2A_4\)
(8) \(A_1+A_2+A_5\)

(9) \(2A_1+2A_3\)
(10) \(4A_2\)
(11) \(A_1+[2,m]\)
(12) \(2A_1+[2,m,2]\)
(13) \(3A_1+[m,[2],[2],[2]]\)

Note. The non-black color negative curves are sections in the configuration.
The bule color negative curves are 2-sections in the configuration.
The red color negative curves do not have any point which is allowed to be blowed up in the configuration.

SNC-basic surfaces


(14) \([3]+A_1+A_2+A_5\)
(15) \([3]+2A_4\)
(16) \([3]+E_8 (node)\)

(17) \([3]+E_8 (cusp)\)
(18) \([2,4]+E_8 (cusp)\)
(19) \(A_1+[3]+[5]+E_8\)

(20) \([3]+A_1+E_7\)
(21) \(A_1+[3]+[3]+E_6\)
(22) \([2,3]+A_2+A_5\)

(23) \([2,3]+A_1+2A_3\)

Note. The non-black color negative curves are sections in the configuration.
The bule color negative curves are 2-sections in the configuration.
The red color negative curves do not have any point which is allowed to be blowed up in the configuration.