The changeable parkha is used to find good and bad directions for e.g. positioning of furniture, direction of travellng and medical treatment. To find the changeable parkha for a male of female use the following way. The count used is the age plus one.
For a male start at Li and count clockwise.
For a female start at Kham and count anti clockwise.

E.g. male age 59 so count is 60. (count / 8 ) = 7 remainder = 4 start at Li = 1, Khön = 2, Da = 3, Khen = 4 this is the changeable parkha.

E.g. fermale age 51 so count is 52. (count / 8 ) = 6 remainder = 4 start at Kham = 1, Khen = 2, Da = 3, Khön = 4 this is the changeable parkha.

Look for the good and bad directions at a geomantic house.

As an example we take a calculation for the changeable parkha Li ( for a male at the age of 1,9,17,etc. and for female at the age of 5,13,21, etc.).
Around the parkha Li you will see from "Best of" to "Very worst" the following.