U52ttNU64ttsplusNMU11ttU12isNatKindU12ttU13isNatKindU13ttU14isNatKindU14ttU15isNatU15ttU16isNatU16ttttU21ttU22isNatKindU22ttU23isNatU23ttttU31ttU32isNatKindU32ttttU41ttttU51ttU52isNatKindU61ttU62isNatKindU62ttU63isNatU63ttU64isNatKindisNatttisNatU11isNatKindisNatU21isNatKindisNatKindttisNatKindU31isNatKindisNatKindU41isNatKindplusN0U51isNatplusNsMU61isNatU52ttU64ttU11ttU12ttU13ttU14ttU15ttU16ttU21ttU22ttU23ttU31ttU32ttU41ttU51ttU61ttU62ttU63ttisNatisNatKindplusN0plusNsM2.1U52ttU52ttNU52ttttt21.14unfold -fp -vpos -sc -fph