U41ttNU51ttsplusNMU71ttplusxNMNandttXU11ttU12isNatU12ttU13isNatU13ttttU21ttU22isNatU22ttttU31ttU32isNatU32ttU33isNatU33ttttU61tt0isNatttisNatU11andisNatKindisNatU21isNatKindisNatU31andisNatKindisNatKindttisNatKindandisNatKindisNatKindisNatKindplusN0U41andisNatplusNsMU51andandisNatxN0U61andisNatxNsMU71andandisNat2.1U41ttU41ttNU41ttNU41ttttt21.14if standard then (var | con | (lpo || unfold[1] || (dp;(tdg | sccs | sc)*;(edg[2] | sccs | sc | sct | {ur?;lpo -dp -af[2]}restore | {ur?;matrix -dp -dim 2 -ib 2 -ob 2 -ur[2]}restore | uncurryx?;uncurryx -top )[10]*)!)) else if relative then (trivial | var | (unfold[2] || (( lpo -quasi | matrix -dim 2 -ib 2 -ob 3 | matrix -dim 3 -ib 2 -ob 2 | uncurryx )[10]*))) else fail