  Using an effective one body approach we describe in detail gravitational
waves from classical three body problem on a non-rotating straight line and
derive their basic physical characteristics. Special attention is paid to the
irregular motions of such systems and to the significance of double and triple
collisions. The conclusive role of the collinear solutions is also discussed in
short. It is shown that the residuals may contain information about irregular
motion of the source of gravitational waves.
