#	Algebra (L)	Fundamental group (H)	Generators of H (k)
1	\( 2 A_1 \)	\(Z_2\)	1 1
2	\( A_2 \)	\(Z_1\)	0
3	\( 2 A_1^2 \)	\(Z_2\)	1 1
4	\( A_1+A_1^2 \)	\(Z_1\)	0 0