M143:   M143<-M10<-Q = P.P
M420:   M420<-M143<-M10<-Q = P.P.E
M407:   M407<-M143<-M10<-Q = P.P.PL
M10:    M10<-Q = P
M421:   M421<-M143<-M10<-Q = P.P.E
M406:   M406<-M143<-M10<-Q = P.P.PL