C1111233131211111211113313331333133313232212111133132313331122112323132231   >>    C111123313121111121111331333133313331323221211113313231333112211232313223   <<    C1111233131211111211113313331333133313232212111133132313331122112323132233   >>      C1111233131211111211113313331333133313232212111133132313331122112323132232   >>