  The CoRoT satellite supplied the scientific community with a huge data base
of variable stars. Among them the RR Lyrae stars have intensively been
discussed in numerous papers in the last few years, but the latest runs have
not been checked to find RR Lyrae stars up to now. Our main goal was to fill
this gap and complete the CoRoT RR Lyrae sample. We found nine unstudied RR
Lyrae stars. Seven of them are new discoveries. We identified three new Blazhko
stars. The Blazhko effect shows non-strictly repetitive nature for all stars.
The frequency spectrum of the Blazhko star CoRoT 104948132 contains second
overtone frequency with the highest known period ratio. The harmonic amplitude
and phase declines with the harmonic order were studied for non-Blazhko stars.
We found a period dependent but similar shape amplitude decline for all stars.
We discovered significant random period fluctuation for one of the two
oversampled target, CM Ori. After a successful transformation of the CoRoT band
parameters to the Johnson V values we estimated the basic physical properties
such as mass, luminosity, metallicity. The sample can be divided into two
subgroups with respect to the metallicity but otherwise the physical parameters
are in the canonical range of RR Lyrae stars.
