A 2006 addition to the score extended the final notes of the last movement, and while both versions are accepted, the original remains more frequently recorded. Musical Structure and Review
If the "22" refers to measure 22, you are looking at the opening exposition of the main "Lento" theme—grief-stricken, low cellos and basses, marked subito f followed by an immediate collapse to ppp . kurtag stele score pdf 22