B33113313132313113313223313331323133313231333132333131333132322133313221221   >>    B3311331313231311331322331333132313331323133313233313133313232213331322122   <<    B33113313132313113313223313331323133313231333132333131333132322133313221223   >>      B33113313132313113313223313331323133313231333132333131333132322133313221222   >>