block auto !word
  block capitalize
    abbr bcla by contradiction let's assume
    abbr wlg without loss of generality
    abbr tits that is to say,
    abbr wpbd we will prove the statement in both directions.
    abbr itf it then follows

    for who <- @⟨which,this⟩
    for what <- @⟨means,implies⟩
    abbr @⟨@who:ww,tt⟩@⟨@what:m,i⟩ @who @what

  abbr stam statement
  abbr cox counterexample
  abbr lcon linear combination
  abbr vst vector space

  abbr vx vertex
  abbr mx matrix
  abbr vertexs vertices
  abbr matrixs matrices

  for kind <- @⟨parts,substitution⟩
  abbr ib@⟨@kind:p,s⟩ integration by @kind

  for kind <- @⟨independent,dependent⟩
  abbr l@⟨@kind:ind,de⟩ linearly @kind

  for kind <- @⟨value,vector,pair⟩
  abbr eg@⟨@kind:va,ve,p⟩ eigen@kind

  for kind <- @⟨orthogonal,orthonormal⟩
  abbr @⟨@kind:ortg,ortn⟩ @kind

  for kind <- @⟨scalar,ordinary,linear,⟩
  abbr @⟨@kind:s,o,l,⟩deq @kind differential equation