For example, the COMBINE INTERLEAVING GAP C step in MG 1 is obtained from the string abgab.
we define the parsing schema for MG k , a parser for mildly illnested structures for gap degree k, as the schema where the item set is the same as that of WG k , except that items now contain mildly ill-nested structures for gap degree k; and the set of deduction steps consists of the LINK step in WG k , plus a set of COMBINE steps obtained as explained herein.