Manifold is Compound Nongeometric H_1=Z_2+Z_72 Edge 1 { Seifert atom 1 , Seifert atom 2 } (1 2) (1 1) Seifert atom 1 (D^2,(2,1),(3,1),(1,2) ) Seifert atom 2 (D^2,(2,1),(4,3),(1,-1) )
The answer tells us that the manifold is obtained by gluing together two Seifert manifolds with toral boundaries. The matrix of gluing homeomorphism is (1 2) (1 1), where (1 2) and (1 1) are rows.