fact: Definition ΣI := match P with (i,l) => mm_linstr_enc i l end.
imports: List Permutation Arith Lia Undecidability.Shared.Libs.DLW(utils pos vec subcode sss) Undecidability.MinskyMachines.MM(mm_defs mm_utils) Undecidability.ILL(ILL EILL ill eill)