Background: Study of 573 genome sequences belonging to SARS, MERS and SARS-CoV-2 (CoVID-19) viruses.
Objective: To compare the virus sequences, which originate from different places around the world.
Methods: Alignment free methods for representation of sequences and chemometrical methods for analyzing of clusters.
Results: Majority of genome sequences are clustered with respect on virus type, but some of them are outliers.
Conclusion: We indicate 71 sequences, which tend to belong to more than cluster.