C12312213132313231311331313331322132313231232313231333132322321   >>    C1231221313231323131133131333132213231323123231323133313232232   <<    C12312213132313231311331313331322132313231232313231333132322323   >>      C12312213132313231311331313331322132313231232313231333132322322   >>