C22212323232133313113313331333133313231323132222123112331313221   >>    C2221232323213331311331333133313331323132313222212311233131322   <<    C22212323232133313113313331333133313231323132222123112331313223   >>      C22212323232133313113313331333133313231323132222123112331313222   >>