[tex]Alternate\text{ interior: 1 and 1}[/tex][tex]\text{Same side exterior: 4 and 4}[/tex][tex]\text{vertical: 4 and 3,1 AND 3 and 4,2}[/tex][tex]Same\text{ side interior: 3 and 3}[/tex][tex]\text{Obtuse angle pairs: }4\text{ and 1 AND 2 and 3}[/tex][tex]\text{Adjacent pair angles: None}[/tex][tex]\text{Alternate exterior: }2\text{ and 1}[/tex][tex]\text{Corresponding angles: }4\text{ and 1 AND 2 and 3}[/tex][tex]\text{Complementary: Non}e[/tex]
Hence, the 4-letter code is A G D B
