C123122131323132313113313133313221323132312323132313331323213221   >>    C12312213132313231311331313331322132313231232313231333132321322   <<    C123122131323132313113313133313221323132312323132313331323213223   >>      C123122131323132313113313133313221323132312323132313331323213222   >>