Quote Originally Posted by chips and underwear View Post
I'm not clear if you mean MBTI type or socionics type because MBTI types use all capital letters and the socionics types puts the j/p in lower case to distinguish it from MBTI. I guess you probably mean INFP as socionics INFp (IEI) but just wanted to clarify.
Russian system is both use the same lettering because they are combined there.