[Ymmärtä-ä-kse-ni suome-n infinitiive-j-ä], tutk-i-n Hakulise-n ja Karlssoni-n kirja-a.
understand-TA-TRAN-1SG.P OS Finnish-GEN infinitive-PL-P AR study-PA ST-1SG H-GEN and K-GEN book-PAR
In order to understand Finnish infinitives, I studied Hakulinen and Karlsson's book