C111113331333132322331333133313331323133313233213133311222221231   >>    C11111333133313232233133313331333132313331323321313331122222123   <<    C111113331333132322331333133313331323133313233213133311222221233   >>      C111113331333132322331333133313331323133313233213133311222221232   >>