C11111211113313112113313331333133313133313232233133313231323133313331313221   >>    C1111121111331311211331333133313331313331323223313331323132313331333131322   <<    C11111211113313112113313331333133313133313232233133313231323133313331313223   >>      C11111211113313112113313331333133313133313232233133313231323133313331313222   >>