C111123313331323113313331333133313331322331313331311331323131311213233231   >>    C11112331333132311331333133313331333132233131333131133132313131121323323   <<    C111123313331323113313331333133313331322331313331311331323131311213233233   >>      C111123313331323113313331333133313331322331313331311331323131311213233232   >>