++(0,-1) coordinate (a3); (a3) – +(1,0) node\[right=-2.5pt\][[5]{}]{}; (a3) – ++(0,-0) coordinate (a4) – +(-1,0) node\[left=-2.5pt\][[1]{}]{}; (a4) –+ (0,-1) node\[right=-2.5pt\][[6]{}]{};

–(f10) node \[left=0pt\]

(0,0) node\[above=-2.5pt\][[3]{}]{} – ++(0,-1) coordinate (a1) – +(1,0) node\[right=-2.5pt\][[4]{}]{}; (a1) – ++(0,-1) coordinate (a2) – +(-1,0) node\[left=-2.5pt\][[2]{}]{}; (a2) – ++(0,-1) coordinate (a3) – +(-1,0) node\[left=-2.5pt\][[1]{}]{}; (a3) – ++(0,-1) coordinate (a4) – +(1,0) node\[right=-2.5pt\][[5]{}]{}; (a4) –+ (0,-1) node\[below=-2.5pt\][[6]{}]{};

–($.5*(f10)+.5*(f2)$)

node \[left=-5pt\]

(0,0) node\[above=-2.5pt\][[3]{}]{} – ++(0,-1) coordinate (a1) – +(1,0) node\[right=-2.5pt\][[4]{}]{}; (a1) – ++(0,-1) coordinate (a2) – +(0,0) coordinate (a5); (a5)–+(135:1) node\[above left=-5pt\][[2]{}]{} ; (a5)–+(-135:1) node\[below left=-5pt\][[1]{}]{} ;

(a2) – ++(0,0) coordinate (a3) ; (a3) – ++(0,-1) coordinate (a4) – +(1,0) node\[right=-2.5pt\][[5]{}]{}; (a4) –+ (0,-1) node\[below=-2.5pt\][[6]{}]{};

–(f2);

at ($.4*(f8)+.6*(f2)$)

(0,0) node\[above=-2.5pt\][[3]{}]{} – ++(0,-1) coordinate (a1) – +(1,0) node\[right=-2.5pt\][[4]{}]{}; (a1) – +(0,-1) coordinate (a2);

(a2) – +(-1,0) node\[left=-2.5pt\][[2]{}]{}; (a2) – +(-120:1)node\[below left=-5pt\][[1]{}]{}; (a2) – +(-60:1)node\[below right=-5pt\][[6]{}]{}; (a2) – +(0:1)node\[right=-2.5pt\][[5]{}]{};

;

(f9) at (2.46,-6.)

;

(f7) at (4.80,-6.)

; (f8)–(f7)–(f9)–(f10); at ($.5*(f10)+.5*(f7) $)

(0,0)\[red\] node\[right=-2.5pt\][[3]{}]{} – ++(0,-1) coordinate (a1) – +(1,0) node\[right=-2.5pt\][[4]{}]{}; (a1)\[red\] – ++(0,0) coordinate (a2) – +(-1,0) node\[left=-2.5pt\][[2]{}]{}; (a2) – ++(0,-1) coordinate (a3); (a3) – +(1,0) node\[right=-2.5pt\][[5]{}]{}; (a3) – ++(0,-0) coordinate (a4) – +(-1,0) node\[left=-2.5pt\][[1]{}]{}; (a4) –+ (0,-1) node\[right=-2.5pt\][[6]{}]{};

;

;

on the right we show its two faces, one 