  The results on partial wave analysis of 3pi system produced at beam momentum
36.6 GeV/c on beryllium target are presented. New method of amplitude analysis
is suggested -- extraction of largest eigenvalue of density matrix. Exotic wave
with JPC = 1-+ in rho pi system is studied in four t' regions. No narrow object
around M = 1.6 GeV is found. Unusually steep t'-dependence for pi(1300) object
is detected.
