Hi

As per your question according to the data 1G , 1K, 1R are the categories in it , concerning caste and

various quota cuz the stop is consistent with them.

1K may be a Kannada quota.

1R is rural.

1G are some things of that kind

Know yours , just like the one to which you belong to, GM means a general merit.

1 G stands for 1 general and GM is for general Merit and if you belong to general merit category then

kindly consider GM.

Hope helpful.