D o c t o r ,/ c o m e / o n , / _ h e n / I / _ o t / _ i t h i n / _ i _ t _ / _ e e t / o _ / t h a t / m a c h i n e ,/ t h i n _ s / s t a r t e d /_ l _ i n _ / a r o u n d / t h e / r o o m /.
T, E, A, M, S, H, L, I, R, O, D, N, U, C
As far as I can see, all letters are inserted.