Dear all, I am currently facing the following issue, and I was hoping one of you could help. A feature of the system we have is that morphological rules can form chains. However, I would like to prevent that, and wrote the following supertype for all inflectional rules: lex-infl-rule := lex-rule & [ ARGS < [ SYNSEM #synsem, INFL - ] >, SYNSEM #synsem, INFL + ]. However, I still get the chains. For instance, with the following entries in the irregs.tab file, "weißen" is ultimately recognised as a form of the verb "wissen", after applying the two inflectional rules: " weißen IR-ADJ-MW-*-*-PL weiß weiß IR-VERB-NPD-PR-1-SG wissen " with verbose output, I get: (2654 v-slash-none 0 0 1 [root-inf-final] [ir-verb-npd-pr-1-sg ir-adj-mw-*-*-pl] (2651 v-branch-right 0 0 1 [ir-verb-npd-pr-1-sg ir-adj-mw-*-*-pl] (2650 ir-verb-npd-inf 0 0 1 [ir-verb-npd-pr-1-sg ir-adj-mw-*-*-pl] (4 verb-wissen-21/lt-verb-reg-npnom 0 0 1 [ir-verb-npd-inf ir-verb-npd-pr-1-sg ir-adj-mw-*-*-pl] (1 "weißen" 0 0 1 <0:1>))))) An unexpected result, as the output of the adjectival rule can be chained to other rules, even though that shouldn't unify (because of the INFL feature). When outputting in tsdb, that same reading only 'sees' the last application of a morphological rule (that might be a separate bug): 1@9@-1@-1@-1@-1@-1@-1@-1@-1@(root-inf-final (2654 v-slash-none 0 0 1 (2651 v-branch-right 0 0 1 (2650 ir-verb-npd-inf 0 0 1 (4 verb-wissen-21 0 0 1 ("weißen" 1 "\\"weißen\\""))))))@@@@ The whole thing works fine in LKB, and turning chart mapping on or off doesn't help. Can anybody give me a hint what can be wrong, either in the grammar itself, the settings files, or in PET? I have a little, separate tree, where this issue is singled out (small lexicon), which might speed up debugging. Any help is welcome! Best, Bart.