Universal 1570:

Original: If there are (a) passive verb forms with reflexive marker and (b) special (e.g., participial) verb forms for the passive voice, it is exclusively or chiefly type (a) that occurs in the present tense (or in the imperfective tenses).
Standardized: IF there are (a) passive verb forms with a reflexive marker and (b) special (e.g., participial) verb forms for the passive voice, THEN it is exclusively or chiefly type (a) that occurs in the present tense (or in the imperfective tenses).
Keywords: reflexive, diathesis, passive, reflexive marker, present tense, imperfective tense
Domain: inflection, syntax
Type: no genuine implication; rather: provided that
Status: achronic
Quality: statistical
Basis: languages surveyed in Nedjalkov 1980
Source: Nedjalkov 1980: 226

FP