graph #	binary & hex	matrix	degrees	images	nicks	graph theory names
4-0	000000 0x0	B C D A 0 0 0 B 0 0 C 0	0,0,0,0		four strangers
4-1	000001 0x1	B C D A 0 0 0 B 0 0 C 1	1,1,0,0		couple
4-3	000011 0x3	B C D A 0 0 0 B 0 1 C 1	2,1,1,0		a person knows two other peole, but not a third
4-7	000111 0x7	B C D A 0 0 0 B 1 1 C 1	2,2,2,0		triangle; clique
4-11	001011 0xB	B C D A 0 0 1 B 0 1 C 1	3,1,1,1		claw; everybody knows one person
4-12	001100 0xC	B C D A 0 0 1 B 1 0 C 0	1,1,1,1		two couples
4-13	001101 0xD	B C D A 0 0 1 B 1 0 C 1	2,2,1,1		two people know each other, and they each know one other	P4
4-15	001111 0xF	B C D A 0 0 1 B 1 1 C 1	3,2,2,1		kite with triangle body
4-30	011110 0x1E	B C D A 0 1 1 B 1 1 C 0	2,2,2,2		bowtie	K2,2; C4
4-31	011111 0x1F	B C D A 0 1 1 B 1 1 C 1	3,3,2,2		everybody knows everybody except two people
4-63	111111 0x3F	B C D A 1 1 1 B 1 1 C 1	3,3,3,3		everybody knows everybody	K4; W4

Last update: Tue Jul 16 16:39:10 PDT 2013