C1111233133313231133133313331333131211113313222112323132313223321   >>    C111123313331323113313331333133313121111331322211232313231322332   <<    C1111233133313231133133313331333131211113313222112323132313223323   >>      C1111233133313231133133313331333131211113313222112323132313223322   >>