the  table based of works
lingusticsand language acqusition
juris loitmanis
deannis kurzon
ron kuzar
wendy sandller

the subject is tobe better to study of mother tomgued
sometines people donot fo that
eg jew of marocco -ladino
jews of easter europe - idish
the  he bre(sabra )is now the language that is adapive for the europeuun ones
0-3 better
3-5 less
6-8lss
and soon untilof the 45 years
at this stage
-just G-d can get the ablity to study
weless the hal if that 
45-60
the losein acqisistion fo lanhguage
50-70 partly
///
/// deeatth- the ful
since the aperson need to sustain his languages ever mother