C31232233133313221211113313331333133313331212111112323133313231312321   >>    C3123223313331322121111331333133313331333121211111232313331323131232   <<    C31232233133313221211113313331333133313331212111112323133313231312323   >>      C31232233133313221211113313331333133313331212111112323133313231312322   >>