AY\Age 1-2 2-3 3-4 4-5 5-6
1 \[g_{1,1}\] \[g_{1,2}\] \[g_{1,3}\] \[g_{1,4}\] \[g_{1,5}\]
2 \[g_{2,1}\] \[g_{2,2}\] \[g_{2,3}\] \[g_{2,4}\]
3 \[g_{3,1}\] \[g_{3,2}\] \[g_{3,3}\]
4 \[g_{4,1}\] \[g_{4,2}\]
5 \[g_{5,1}\]