Sentence:  Her utmost powers of expression (which were certainly not great in ink) were exhausted in the attempt to write what she felt on the subject of my journey. Four sides of incoherent and interjectional beginnings of sentences, that had no end, except <WSD>blots</WSD>, were inadequate to afford her any relief. But the <WSD>blots</WSD> were more expressive to me than the best composition; for they showed me that Peggotty had been crying all over the paper, and what could I have desired more? 
Meaning of the word marked with <WSD> tags:  A blemish, spot or stain made by a coloured substance.