    Sentence I i what yer aid the fn’ also méntion the  number of regenerations?    Senterice 2: This. line “became: stuck ‘ip -the ‘public,  ‘eOnsciouisness despite riet often being repeated, dnd was  recognised by producers of the showi as plot obstacle. for.  when. thé show firilly had.to regérierate the Doctor a  thirteenth time,