from: http://www.gsal.org/articles/flying/...n_van_leeu.htm
LOMCOVAK:

A Lomcovak is considered successful if the empanage of the A/C breaks the forward plane of trajectory.

A) 45 upline, roll inverted, immediately initiate an outside snap. At the apex airspeed is zero and the combined rotational forces from the snap, torque from the engine and full forward elevator flip A/C end over end in a forward pitch tumble. Recovery is immediate after 2nd tumble

B) 45 upline, roll left to knife edge. Full right aileron, rudder and down elevator

C) 45 upline, positive snap left till inverted, then immediately apply full down elevator while maintaining previous control inputs. A Lomcovak is considered successful if the empanage of the A/C breaks the forward plane of trajectory.