The aim of this paper is to provide a unified account of Old English(OE) verb-particle orders that explains how particles in OE can precede or follow verbs in association with the main and subordinate clauses. In OE verb-particle combinations, pre-verbal and post-verbal particles both occur in OE main and subordinate clauses. However it is commonly accepted that in OE main clauses most particles are pre-verbal whereas in OE subordinate clauses particles can be pre-verbal or post verbal. Thus this OE verb-particle combination has been a difficult task to VO and OV phrase structure as well as Pintzuk(1999)'s hybrid INFL structure(INFL-final and INFL-medial). Based on the reinterpreted LCA that asymmetric c-command relations are intrinsically connected to linear order in PF, we propose that particles can be pre-verbal or post verbal in OE main and subordinate clauses by moving particles or verbs out of V in order to maintain asymmetric relations imposed by the reinterpreted LCA. In this account post-verbal particles in OE main clause can be best understood as due to the effects of a V2(Verb Second) rules. In subordinate clauses where there are no effects of V2 rules, it is assumed that particles can be pre-verbal or post-verbal by the reinterpreted LCA requirements